`mailserver.flexi-book.net`

DNSSEC	⚠️ Not signed
A	188.64.56.18^{🇩🇪 Optitrust188.64.56.0/21 optitrust}
		PTR	`mailserver.flexi-book.net`
TXT	`v=spf1 +mx +a +ip4:188.64.56.18 ~all`

`flexi-book.net`

DNSSEC	⚠️ Not signed
A	2606:4700:20::681a:2d1^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::681a:3d1^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::ac43:4758^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.2.209^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.3.209^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.71.88^{🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`harmony.ns.cloudflare.com` ⭐
NS	`keaton.ns.cloudflare.com`
MX	`mail.flexi-book.net` ⭐
TXT	`v=spf1 a mx -all`
HTTPS	HTTP/2 ✓ hints match
		IPv4 hints	104.26.2.209, 104.26.3.209, 172.67.71.88
		IPv6 hints	2606:4700:20::681a:2d1, 2606:4700:20::681a:3d1, 2606:4700:20::ac43:4758
SOA	`harmony.ns.cloudflare.com`dns@cloudflare.com serial=2400840664

PTR for

18.56.64.188.in-addr.arpa

Same first word

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DNS History

1 record (1 active, 0 former)

●A188.64.56.182026-02-22 → 2026-04-13 · 2 obs

● 2026-02-22 15:03:28
● 2026-04-13 02:35:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
flexi-book.net	harmony.ns.cloudflare.com, keaton.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.38.146

NS records: harmony.ns.cloudflare.com, keaton.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for flexi-book.net (unsigned zone)

⏱️ Timing

Total: 160ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`188.64.56.18`
TXT	1	`v=spf1 +mx +a +ip4:188.64.56.18 ~all`

Analysis

IP Addresses

mailserver.flexi-book.net points to a single IP: 188.64.56.18.

Other host names, for instance mail.brushes.gr, mail.monreposhotel.com, mail.hotelplaton.gr, mail.archontikopetras.gr and _dc-mx.9911443eb04a.pyrgoshotel.gr share IP numbers with mailserver.flexi-book.net.

mailserver.flexi-book.net - robtex.com